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authorArturo Espinosa <unammx@src.gnome.org>1998-10-16 08:02:22 +0800
committerArturo Espinosa <unammx@src.gnome.org>1998-10-16 08:02:22 +0800
commit4627acaf00c285354a823d612ca1c365f8c8e79d (patch)
tree69d04e8b27cf71a1b33d8e0ed7919f1dcb434397 /calendar/month-view.c
parentd5a94c19625d858157fdb4a66d89eaf0ee345564 (diff)
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Syncety sync -- don't you love it? - Federico
svn path=/trunk/; revision=451
Diffstat (limited to 'calendar/month-view.c')
-rw-r--r--calendar/month-view.c331
1 files changed, 312 insertions, 19 deletions
diff --git a/calendar/month-view.c b/calendar/month-view.c
index b6d9cd12d9..7cce9b359e 100644
--- a/calendar/month-view.c
+++ b/calendar/month-view.c
@@ -14,7 +14,14 @@
#include "timeutil.h"
-#define SPACING 4 /* Spacing between title and calendar */
+/* Spacing between title and calendar */
+#define SPACING 4
+
+/* Padding between day borders and event text */
+#define EVENT_PADDING 3
+
+/* Font for the month view events */
+#define EVENT_FONT "-adobe-helvetica-medium-r-normal--10-*-*-*-p-*-*-*"
static void month_view_class_init (MonthViewClass *class);
@@ -64,13 +71,162 @@ month_view_class_init (MonthViewClass *class)
widget_class->size_allocate = month_view_size_allocate;
}
+/* Returns the index of the specified arrow in the array of arrows */
+static int
+get_arrow_index (MonthView *mv, GnomeCanvasItem *arrow)
+{
+ int i;
+
+ for (i = 0; i < 42; i++)
+ if (mv->up[i] == arrow)
+ return i;
+ else if (mv->down[i] == arrow)
+ return i + 42;
+
+ g_warning ("Eeeek, arrow %p not found in month view %p", arrow, mv);
+ return -1;
+}
+
+/* Checks whether arrows need to be displayed at the specified day index or not */
+static void
+check_arrow_visibility (MonthView *mv, int day_index)
+{
+ GtkArg args[3];
+ double text_height;
+ double clip_height;
+ double y_offset;
+
+ args[0].name = "text_height";
+ args[1].name = "clip_height";
+ args[2].name = "y_offset";
+ gtk_object_getv (GTK_OBJECT (mv->text[day_index]), 3, args);
+
+ text_height = GTK_VALUE_DOUBLE (args[0]);
+ clip_height = GTK_VALUE_DOUBLE (args[1]);
+ y_offset = GTK_VALUE_DOUBLE (args[2]);
+
+ /* Check up arrow */
+
+ if (y_offset < 0.0)
+ gnome_canvas_item_show (mv->up[day_index]);
+ else
+ gnome_canvas_item_hide (mv->up[day_index]);
+
+ if (y_offset > (clip_height - text_height))
+ gnome_canvas_item_show (mv->down[day_index]);
+ else
+ gnome_canvas_item_hide (mv->down[day_index]);
+}
+
+/* Finds which arrow was clicked and scrolls the corresponding text item in the month view */
+static void
+do_arrow_click (MonthView *mv, GnomeCanvasItem *arrow)
+{
+ int arrow_index;
+ int day_index;
+ int up;
+ GtkArg args[4];
+ double text_height, clip_height;
+ double y_offset;
+ GdkFont *font;
+
+ arrow_index = get_arrow_index (mv, arrow);
+ up = (arrow_index < 42);
+ day_index = up ? arrow_index : (arrow_index - 42);
+
+ /* See how much we can scroll */
+
+ args[0].name = "text_height";
+ args[1].name = "clip_height";
+ args[2].name = "y_offset";
+ args[3].name = "font_gdk";
+ gtk_object_getv (GTK_OBJECT (mv->text[day_index]), 4, args);
+
+ text_height = GTK_VALUE_DOUBLE (args[0]);
+ clip_height = GTK_VALUE_DOUBLE (args[1]);
+ y_offset = GTK_VALUE_DOUBLE (args[2]);
+ font = GTK_VALUE_BOXED (args[3]);
+
+ if (up)
+ y_offset += font->ascent + font->descent;
+ else
+ y_offset -= font->ascent + font->descent;
+
+ if (y_offset > 0.0)
+ y_offset = 0.0;
+ else if (y_offset < (clip_height - text_height))
+ y_offset = clip_height - text_height;
+
+ /* Scroll */
+
+ gnome_canvas_item_set (mv->text[day_index],
+ "y_offset", y_offset,
+ NULL);
+
+ check_arrow_visibility (mv, day_index);
+}
+
+/* Event handler for the scroll arrows in the month view */
+static gint
+arrow_event (GnomeCanvasItem *item, GdkEvent *event, gpointer data)
+{
+ MonthView *mv;
+
+ mv = MONTH_VIEW (data);
+
+ switch (event->type) {
+ case GDK_ENTER_NOTIFY:
+ gnome_canvas_item_set (item,
+ "fill_color", color_spec_from_prop (COLOR_PROP_PRELIGHT_DAY_BG),
+ NULL);
+ return TRUE;
+
+ case GDK_LEAVE_NOTIFY:
+ gnome_canvas_item_set (item,
+ "fill_color", color_spec_from_prop (COLOR_PROP_DAY_FG),
+ NULL);
+ return TRUE;
+
+ case GDK_BUTTON_PRESS:
+ do_arrow_click (mv, item);
+ return TRUE;
+
+ default:
+ break;
+ }
+
+ return FALSE;
+}
+
+/* Creates a new arrow out of the specified points and connects the proper signals to it */
+static GnomeCanvasItem *
+new_arrow (MonthView *mv, GnomeCanvasGroup *group, GnomeCanvasPoints *points)
+{
+ GnomeCanvasItem *item;
+ char *color_spec;
+
+ color_spec = color_spec_from_prop (COLOR_PROP_DAY_FG);
+
+ item = gnome_canvas_item_new (GNOME_CANVAS_GROUP (group),
+ gnome_canvas_polygon_get_type (),
+ "points", points,
+ "fill_color", color_spec,
+ "outline_color", color_spec,
+ NULL);
+
+ gtk_signal_connect (GTK_OBJECT (item), "event",
+ (GtkSignalFunc) arrow_event,
+ mv);
+
+ return item;
+}
+
static void
month_view_init (MonthView *mv)
{
int i;
GnomeCanvasItem *day_group;
GnomeCanvasPoints *points;
- char *color_spec;
/* Title */
@@ -94,9 +250,9 @@ month_view_init (MonthView *mv)
"day_font", BIG_NORMAL_DAY_FONT,
NULL);
- /* Arrows and text items */
-
- color_spec = color_spec_from_prop (COLOR_PROP_DAY_FG);
+ /* Arrows and text items. The arrows start hidden by default; they will be shown as
+ * appropriate by the item adjustment code.
+ */
points = gnome_canvas_points_new (3);
@@ -113,13 +269,7 @@ month_view_init (MonthView *mv)
points->coords[4] = 7;
points->coords[5] = 3;
- mv->up[i] = gnome_canvas_item_new (GNOME_CANVAS_GROUP (day_group),
- gnome_canvas_polygon_get_type (),
- "points", points,
- "fill_color", color_spec,
- "outline_color", color_spec,
- NULL);
- gnome_canvas_item_hide (mv->up[i]);
+ mv->up[i] = new_arrow (mv, GNOME_CANVAS_GROUP (day_group), points);
/* Down arrow */
@@ -130,13 +280,17 @@ month_view_init (MonthView *mv)
points->coords[4] = 21;
points->coords[5] = 3;
- mv->down[i] = gnome_canvas_item_new (GNOME_CANVAS_GROUP (day_group),
- gnome_canvas_polygon_get_type (),
- "points", points,
- "fill_color", color_spec,
- "outline_color", color_spec,
+ mv->down[i] = new_arrow (mv, GNOME_CANVAS_GROUP (day_group), points);
+
+ /* Text item */
+
+ mv->text[i] = gnome_canvas_item_new (GNOME_CANVAS_GROUP (day_group),
+ gnome_canvas_text_get_type (),
+ "font", EVENT_FONT,
+ "anchor", GTK_ANCHOR_NW,
+ "fill_color", color_spec_from_prop (COLOR_PROP_DAY_FG),
+ "clip", TRUE,
NULL);
- gnome_canvas_item_hide (mv->down[i]);
}
mv->old_current_index = -1;
@@ -172,6 +326,55 @@ month_view_size_request (GtkWidget *widget, GtkRequisition *requisition)
requisition->height = 150;
}
+/* Adjusts the text items for events in the month view to the appropriate size. It also makes the
+ * corresponding arrows visible or invisible, as appropriate.
+ */
+static void
+adjust_children (MonthView *mv)
+{
+ int i;
+ GnomeCanvasItem *item;
+ double x1, y1, x2, y2;
+ GtkArg arg;
+
+ for (i = 0; i < 42; i++) {
+ /* Get dimensions of the day group */
+
+ item = gnome_month_item_num2child (GNOME_MONTH_ITEM (mv->mitem), i + GNOME_MONTH_ITEM_DAY_GROUP);
+ gnome_canvas_item_get_bounds (item, &x1, &y1, &x2, &y2);
+
+ /* Normalize and add paddings */
+
+ x2 -= x1 + EVENT_PADDING;
+ x1 = EVENT_PADDING;
+ y2 -= y1 + EVENT_PADDING;
+ y1 = EVENT_PADDING;
+
+ /* Add height of day label to y1 */
+
+ item = gnome_month_item_num2child (GNOME_MONTH_ITEM (mv->mitem), i + GNOME_MONTH_ITEM_DAY_LABEL);
+
+ arg.name = "text_height";
+ gtk_object_getv (GTK_OBJECT (item), 1, &arg);
+ y1 += GTK_VALUE_DOUBLE (arg);
+
+ /* Set the position and clip size */
+
+ gnome_canvas_item_set (mv->text[i],
+ "x", x1,
+ "y", y1,
+ "clip_width", x2 - x1,
+ "clip_height", y2 - y1,
+ "x_offset", 0.0,
+ "y_offset", 0.0,
+ NULL);
+
+ /* See what visibility state the arrows should be set to */
+
+ check_arrow_visibility (mv, i);
+ }
+}
+
static void
month_view_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
{
@@ -208,15 +411,105 @@ month_view_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
"width", (double) (allocation->width - 1),
"height", (double) (allocation->height - y - 1),
NULL);
+
+ /* Adjust children */
+
+ adjust_children (mv);
+}
+
+/* This defines the environment for the calendar iterator function that is used to populate the
+ * month view with events.
+ */
+struct iter_info {
+ MonthView *mv; /* The month view we are creating children for */
+ int first_day_index; /* Index of the first day of the month within the month item */
+ time_t month_begin, month_end; /* Beginning and end of month */
+ GString **strings; /* Array of strings to populate */
+};
+
+/* This is the calendar iterator function used to populate the string array with event information.
+ * For each event, it iterates through all the days that the event touches and appends the proper
+ * information to the string array in the iter_info structure.
+ */
+static int
+add_event (iCalObject *ico, time_t start, time_t end, void *data)
+{
+ struct iter_info *ii;
+ struct tm *tm;
+ time_t t;
+ time_t day_begin_time, day_end_time;
+
+ ii = data;
+
+ /* Get the first day of the event */
+
+ t = MAX (start, ii->month_begin);
+ day_begin_time = time_day_begin (t);
+ day_end_time = time_day_end (day_begin_time);
+
+ /* Loop until the event ends or the month ends. For each day touched, append the proper
+ * information to the corresponding string.
+ */
+
+ do {
+ tm = localtime (&day_begin_time);
+ g_string_sprintfa (ii->strings[ii->first_day_index + tm->tm_mday - 1], "%s\n", ico->summary);
+
+ /* Next day */
+
+ day_begin_time = time_add_day (day_begin_time, 1);
+ day_end_time = time_day_end (day_begin_time);
+ } while ((end > day_begin_time) && (day_begin_time < ii->month_end));
+
+ return TRUE; /* this means we are not finished yet with event generation */
}
void
month_view_update (MonthView *mv, iCalObject *object, int flags)
{
+ struct iter_info ii;
+ GString *strings[42];
+ int i;
+ time_t t;
+
g_return_if_fail (mv != NULL);
g_return_if_fail (IS_MONTH_VIEW (mv));
- /* FIXME */
+ ii.mv = mv;
+
+ /* Create an array of empty GStrings */
+
+ ii.strings = strings;
+
+ for (i = 0; i < 42; i++)
+ strings[i] = g_string_new (NULL);
+
+ ii.first_day_index = gnome_month_item_day2index (GNOME_MONTH_ITEM (mv->mitem), 1);
+ g_assert (ii.first_day_index != -1);
+
+ /* Populate the array of strings with events */
+
+ t = time_from_day (mv->year, mv->month, 1);
+ ii.month_begin = time_month_begin (t);
+ ii.month_end = time_month_end (t);
+
+ calendar_iterate (mv->calendar->cal, ii.month_begin, ii.month_end, add_event, &ii);
+
+ for (i = 0; i < 42; i++) {
+ /* Delete the last character if it is a newline */
+
+ if (strings[i]->str && strings[i]->len && (strings[i]->str[strings[i]->len - 1] == '\n'))
+ g_string_truncate (strings[i], strings[i]->len - 1);
+
+ gnome_canvas_item_set (mv->text[i],
+ "text", strings[i]->str,
+ NULL);
+ g_string_free (strings[i], TRUE);
+ }
+
+ /* Adjust children for scrolling */
+
+ adjust_children (mv);
}
/* Unmarks the old day that was marked as current and marks the current day if appropriate */